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Malar augmentation with zygomatic osteotomy in orthognatic surgery: Bone and soft tissue changes threedimensional
Giovanni Gerbino1, Umberto Autorino1, Claudia Borbon1
1Division of Maxillofacial Surgery, Città Della Salute e Della Scienza Hospital, University of Torino, Italy.
Summary
Malar valgization osteotomy combined with orthognathic surgery effectively enhances midface hypoplasia by improving zygomatic projection. This 3D analysis confirms increased width and forward positioning of the malar bone, ensuring facial balance.
Area of Science:
- Plastic Surgery
- Maxillofacial Surgery
- 3D Imaging Analysis
Background:
- Midface hypoplasia presents aesthetic and functional challenges.
- Malar valgization osteotomy is a surgical technique to augment the malar region.
- Orthognathic surgery addresses skeletal discrepancies in the jaws.
Purpose of the Study:
- To objectively assess 3D soft tissue and bone changes in the malar region following malar valgization osteotomy combined with orthognathic surgery.
- To evaluate the efficacy of this combined surgical approach for midface correction.
Main Methods:
- Prospective study of 10 patients undergoing simultaneous malar valgization osteotomy and maxillo-mandibular orthognathic surgery.
- 3D reconstruction of maxillofacial CT scans (pre- and post-operative) using MatLab and iPlan software.
- Analysis of bone and soft tissue changes, including distances, angles, and projections.
Main Results:
- Significant increase in the distance between bilateral malar prominences and forward movement of the malar bone.
- Improvement in the malar angle (α) and increased width measurements in both bone and soft tissue.
- 3D analysis confirmed antero-lateral movement and increased width of the malar bone projection.
Conclusions:
- Malar valgization osteotomy combined with orthognathic surgery effectively improves zygomatic projection, contributing to balanced facial correction in midface hypoplasia.
- 3D geometrical analysis demonstrates significant increases in transversal and forward dimensions of the malar region.
- The combined procedure is safe and effective for aesthetic and functional correction.
